src/ui/canvas.cpp

Wed, 08 Jun 2022 20:41:21 +0300

author
Teemu Piippo <teemu@hecknology.net>
date
Wed, 08 Jun 2022 20:41:21 +0300
changeset 205
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parent 201
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child 206
654661eab7f3
permissions
-rw-r--r--

Refactor colors.cpp/.h

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1 #include <QMouseEvent>
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2 #include <QPainter>
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3 #include "document.h"
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4 #include "canvas.h"
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5
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6 Canvas::Canvas(
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7 Model* model,
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8 EditorTabWidget *document,
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9 DocumentManager* documents,
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10 const ColorTable& colorTable,
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11 QWidget* parent) :
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12 PartRenderer{model, documents, colorTable, parent},
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13 document{document}
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14 {
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15 this->setMouseTracking(true);
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16 }
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17
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18 /**
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19 * @brief Handles a change of selection
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20 * @param selectedIds IDs of objects to select
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21 * @param deselectedIds IDs of objects to deselect.
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22 */
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23 void Canvas::handleSelectionChange(const QSet<ModelId> &selectedIds, const QSet<ModelId> &deselectedIds)
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24 {
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25 Q_ASSERT(not selectedIds.contains({0}));
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26 this->selection.subtract(deselectedIds);
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27 this->selection.unite(selectedIds);
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28 gl::setModelShaderSelectedObjects(&this->shaders, this->selection);
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29 this->update();
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30 }
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31
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32 /**
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33 * @brief Updates vertex rendering
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34 * @param document Document to get vertices from
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35 */
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36 void Canvas::rebuildVertices(EditorTabWidget* document)
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37 {
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38 if (this->vertexProgram.has_value())
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39 {
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40 this->vertexProgram->build(document);
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41 this->update();
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42 }
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43 }
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44
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45 void Canvas::mouseMoveEvent(QMouseEvent* event)
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46 {
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47 const ModelId id = this->pick(event->pos());
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48 this->highlighted = id;
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49 this->totalMouseMove += (event->pos() - this->lastMousePosition).manhattanLength();
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50 this->worldPosition = this->screenToModelCoordinates(event->pos(), this->gridPlane);
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51 if (this->worldPosition.has_value())
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52 {
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53 /*
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54 * Snap the position to grid. This procedure is basically the "change of basis" and almost follows the
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55 * A⁻¹ × M × A formula which is used to perform a transformation in some other coordinate system, except
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56 * we actually use the inverted matrix first and the regular one last to perform the transformation of
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57 * grid coordinates in our XY coordinate system. Also, we're rounding the coordinates which is obviously
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58 * not a linear transformation, but fits the pattern anyway.
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59 */
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60 // First transform the coordinates to the XY plane...
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61 this->worldPosition = glm::inverse(this->gridMatrix) * glm::vec4{*this->worldPosition, 1};
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62 // Then round the coordinates to integer precision...
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63 this->worldPosition = glm::round(*this->worldPosition);
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64 // And finally transform it back to grid coordinates by transforming it with the
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65 // grid matrix.
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66 this->worldPosition = this->gridMatrix * glm::vec4{*this->worldPosition, 1};
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67 }
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68 Q_EMIT this->mouseMove(event);
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69 PartRenderer::mouseMoveEvent(event);
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70 this->update();
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71 }
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72
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73 void Canvas::mousePressEvent(QMouseEvent* event)
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74 {
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75 this->totalMouseMove = 0;
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76 this->lastMousePosition = event->pos();
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77 PartRenderer::mousePressEvent(event);
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78 }
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79
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80 void Canvas::mouseReleaseEvent(QMouseEvent* event)
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81 {
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82 if (this->totalMouseMove < (2.0 / sqrt(2)) * 5.0)
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83 {
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84 Q_EMIT this->mouseClick(event);
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85 }
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86 PartRenderer::mouseReleaseEvent(event);
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87 this->update();
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88 }
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89
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90 void Canvas::initializeGL()
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91 {
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92 // We first create the grid program and connect everything and only then call the part renderer's initialization
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93 // functions so that when initialization sets up, the signals also set up the matrices on our side.
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94 this->gridProgram.emplace(this);
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95 this->gridProgram->initialize();
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96 this->axesProgram.emplace(this);
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97 this->axesProgram->initialize();
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98 this->vertexProgram.emplace(this);
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99 this->vertexProgram->initialize();
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100 for (AbstractBasicShaderProgram* program : {
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101 static_cast<AbstractBasicShaderProgram*>(&*this->gridProgram),
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102 static_cast<AbstractBasicShaderProgram*>(&*this->axesProgram),
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103 static_cast<AbstractBasicShaderProgram*>(&*this->vertexProgram),
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104 })
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105 {
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106 connect(this, &PartRenderer::projectionMatrixChanged,
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107 program, &AbstractBasicShaderProgram::setProjectionMatrix);
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108 connect(this, &PartRenderer::modelMatrixChanged,
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109 program, &AbstractBasicShaderProgram::setModelMatrix);
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110 connect(this, &PartRenderer::viewMatrixChanged,
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111 program, &AbstractBasicShaderProgram::setViewMatrix);
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112 }
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113 connect(this, &PartRenderer::renderPreferencesChanged, this, &Canvas::updateCanvasRenderPreferences);
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114 PartRenderer::initializeGL();
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115 // Set up XZ grid matrix
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116 this->setGridMatrix({{1, 0, 0, 0}, {0, 0, 1, 0}, {0, 1, 0, 0}, {0, 0, 0, 1}});
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117 this->updateCanvasRenderPreferences();
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118 }
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119
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120 static const struct
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121 {
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122 const QBrush pointBrush = {Qt::white};
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123 const QPen polygonPen = {QBrush{Qt::black}, 2.0, Qt::DashLine};
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124 const QPen badPolygonPen = {QBrush{Qt::red}, 2.0, Qt::DashLine};
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125 const QPen pointPen = {QBrush{Qt::black}, 2.0};
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126 const QBrush greenPolygonBrush = {QColor{64, 255, 128, 192}};
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127 const QBrush redPolygonBrush = {QColor{255, 96, 96, 192}};
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128 } pens;
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129
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130 static void renderDrawState(
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131 QPainter* painter,
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132 Canvas* canvas,
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133 DrawState* drawState);
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134
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135 void Canvas::paintGL()
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136 {
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137 PartRenderer::paintGL();
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138 if (this->renderPreferences.style != gl::RenderStyle::PickScene)
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139 {
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140 // Render axes
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141 if (this->renderPreferences.drawAxes)
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142 {
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143 glLineWidth(5);
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144 glEnable(GL_LINE_SMOOTH);
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145 glHint(GL_LINE_SMOOTH_HINT, GL_NICEST);
5fe2dd4e161a added a render style for pick scene
Teemu Piippo <teemu@hecknology.net>
parents: 73
diff changeset
146 this->axesProgram->draw();
5fe2dd4e161a added a render style for pick scene
Teemu Piippo <teemu@hecknology.net>
parents: 73
diff changeset
147 glDisable(GL_LINE_SMOOTH);
5fe2dd4e161a added a render style for pick scene
Teemu Piippo <teemu@hecknology.net>
parents: 73
diff changeset
148 }
119
Teemu Piippo <teemu@hecknology.net>
parents: 118
diff changeset
149 // Render vertices
Teemu Piippo <teemu@hecknology.net>
parents: 118
diff changeset
150 {
172
50f055543ff6 Render vertices as spheres
Teemu Piippo <teemu@hecknology.net>
parents: 170
diff changeset
151 glCullFace(GL_FRONT);
119
Teemu Piippo <teemu@hecknology.net>
parents: 118
diff changeset
152 this->vertexProgram->draw();
Teemu Piippo <teemu@hecknology.net>
parents: 118
diff changeset
153 }
79
5fe2dd4e161a added a render style for pick scene
Teemu Piippo <teemu@hecknology.net>
parents: 73
diff changeset
154 // Render grid
5fe2dd4e161a added a render style for pick scene
Teemu Piippo <teemu@hecknology.net>
parents: 73
diff changeset
155 {
157
869fe95c4e5e improve grid rendering
Teemu Piippo <teemu@hecknology.net>
parents: 129
diff changeset
156 glLineWidth(1);
79
5fe2dd4e161a added a render style for pick scene
Teemu Piippo <teemu@hecknology.net>
parents: 73
diff changeset
157 glEnable(GL_BLEND);
157
869fe95c4e5e improve grid rendering
Teemu Piippo <teemu@hecknology.net>
parents: 129
diff changeset
158 glLineStipple(1, 0x8888);
869fe95c4e5e improve grid rendering
Teemu Piippo <teemu@hecknology.net>
parents: 129
diff changeset
159 glEnable(GL_LINE_STIPPLE);
79
5fe2dd4e161a added a render style for pick scene
Teemu Piippo <teemu@hecknology.net>
parents: 73
diff changeset
160 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
5fe2dd4e161a added a render style for pick scene
Teemu Piippo <teemu@hecknology.net>
parents: 73
diff changeset
161 this->gridProgram->draw();
5fe2dd4e161a added a render style for pick scene
Teemu Piippo <teemu@hecknology.net>
parents: 73
diff changeset
162 glDisable(GL_BLEND);
157
869fe95c4e5e improve grid rendering
Teemu Piippo <teemu@hecknology.net>
parents: 129
diff changeset
163 glDisable(GL_LINE_STIPPLE);
79
5fe2dd4e161a added a render style for pick scene
Teemu Piippo <teemu@hecknology.net>
parents: 73
diff changeset
164 }
5fe2dd4e161a added a render style for pick scene
Teemu Piippo <teemu@hecknology.net>
parents: 73
diff changeset
165 if (this->worldPosition.has_value())
71
198d25fe4e21 show axis directions on the screen
Teemu Piippo <teemu@hecknology.net>
parents: 70
diff changeset
166 {
79
5fe2dd4e161a added a render style for pick scene
Teemu Piippo <teemu@hecknology.net>
parents: 73
diff changeset
167 QPainter painter{this};
5fe2dd4e161a added a render style for pick scene
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parents: 73
diff changeset
168 painter.setRenderHint(QPainter::Antialiasing);
166
8857351912d0 Fix rendering of cursor coordinates on bright background
Teemu Piippo <teemu@hecknology.net>
parents: 165
diff changeset
169 painter.setPen(this->isDark ? Qt::white : Qt::black);
79
5fe2dd4e161a added a render style for pick scene
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parents: 73
diff changeset
170 painter.setBrush(Qt::green);
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Teemu Piippo <teemu@hecknology.net>
parents: 73
diff changeset
171 const QPointF pos = this->modelToScreenCoordinates(*this->worldPosition);
5fe2dd4e161a added a render style for pick scene
Teemu Piippo <teemu@hecknology.net>
parents: 73
diff changeset
172 painter.drawEllipse(pos, 5, 5);
5fe2dd4e161a added a render style for pick scene
Teemu Piippo <teemu@hecknology.net>
parents: 73
diff changeset
173 painter.drawText(pos + QPointF{5, 5}, vectorToString(*this->worldPosition));
5fe2dd4e161a added a render style for pick scene
Teemu Piippo <teemu@hecknology.net>
parents: 73
diff changeset
174 }
191
d355d4c52d51 made editing tools not a polymorphic class tree
Teemu Piippo <teemu@hecknology.net>
parents: 189
diff changeset
175 QPainter painter{this};
d355d4c52d51 made editing tools not a polymorphic class tree
Teemu Piippo <teemu@hecknology.net>
parents: 189
diff changeset
176 painter.setRenderHint(QPainter::Antialiasing);
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Teemu Piippo <teemu@hecknology.net>
parents: 189
diff changeset
177 if (this->renderPreferences.drawAxes)
79
5fe2dd4e161a added a render style for pick scene
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parents: 73
diff changeset
178 {
191
d355d4c52d51 made editing tools not a polymorphic class tree
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parents: 189
diff changeset
179 this->renderAxesLabels(painter);
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Teemu Piippo <teemu@hecknology.net>
parents: 189
diff changeset
180 }
197
0e729e681a2c move drawState to Document
Teemu Piippo <teemu@hecknology.net>
parents: 191
diff changeset
181 if (this->drawState != nullptr) {
0e729e681a2c move drawState to Document
Teemu Piippo <teemu@hecknology.net>
parents: 191
diff changeset
182 renderDrawState(&painter, this, this->drawState);
0e729e681a2c move drawState to Document
Teemu Piippo <teemu@hecknology.net>
parents: 191
diff changeset
183 }
0e729e681a2c move drawState to Document
Teemu Piippo <teemu@hecknology.net>
parents: 191
diff changeset
184 }
0e729e681a2c move drawState to Document
Teemu Piippo <teemu@hecknology.net>
parents: 191
diff changeset
185 }
0e729e681a2c move drawState to Document
Teemu Piippo <teemu@hecknology.net>
parents: 191
diff changeset
186
0e729e681a2c move drawState to Document
Teemu Piippo <teemu@hecknology.net>
parents: 191
diff changeset
187 static void renderDrawState(
0e729e681a2c move drawState to Document
Teemu Piippo <teemu@hecknology.net>
parents: 191
diff changeset
188 QPainter* painter,
0e729e681a2c move drawState to Document
Teemu Piippo <teemu@hecknology.net>
parents: 191
diff changeset
189 Canvas* canvas,
0e729e681a2c move drawState to Document
Teemu Piippo <teemu@hecknology.net>
parents: 191
diff changeset
190 DrawState* drawState)
0e729e681a2c move drawState to Document
Teemu Piippo <teemu@hecknology.net>
parents: 191
diff changeset
191 {
0e729e681a2c move drawState to Document
Teemu Piippo <teemu@hecknology.net>
parents: 191
diff changeset
192 switch(drawState->mode)
0e729e681a2c move drawState to Document
Teemu Piippo <teemu@hecknology.net>
parents: 191
diff changeset
193 {
0e729e681a2c move drawState to Document
Teemu Piippo <teemu@hecknology.net>
parents: 191
diff changeset
194 case SelectMode:
0e729e681a2c move drawState to Document
Teemu Piippo <teemu@hecknology.net>
parents: 191
diff changeset
195 break;
0e729e681a2c move drawState to Document
Teemu Piippo <teemu@hecknology.net>
parents: 191
diff changeset
196 case DrawMode:
191
d355d4c52d51 made editing tools not a polymorphic class tree
Teemu Piippo <teemu@hecknology.net>
parents: 189
diff changeset
197 {
197
0e729e681a2c move drawState to Document
Teemu Piippo <teemu@hecknology.net>
parents: 191
diff changeset
198 painter->setPen(drawState->isconcave ? ::pens.badPolygonPen : ::pens.polygonPen);
0e729e681a2c move drawState to Document
Teemu Piippo <teemu@hecknology.net>
parents: 191
diff changeset
199 if (drawState->previewPolygon.size() > 2 and not drawState->isconcave)
71
198d25fe4e21 show axis directions on the screen
Teemu Piippo <teemu@hecknology.net>
parents: 70
diff changeset
200 {
197
0e729e681a2c move drawState to Document
Teemu Piippo <teemu@hecknology.net>
parents: 191
diff changeset
201 if (canvas->worldPolygonWinding(drawState->previewPolygon) == Winding::Clockwise)
191
d355d4c52d51 made editing tools not a polymorphic class tree
Teemu Piippo <teemu@hecknology.net>
parents: 189
diff changeset
202 {
197
0e729e681a2c move drawState to Document
Teemu Piippo <teemu@hecknology.net>
parents: 191
diff changeset
203 painter->setBrush(::pens.greenPolygonBrush);
191
d355d4c52d51 made editing tools not a polymorphic class tree
Teemu Piippo <teemu@hecknology.net>
parents: 189
diff changeset
204 }
d355d4c52d51 made editing tools not a polymorphic class tree
Teemu Piippo <teemu@hecknology.net>
parents: 189
diff changeset
205 else
d355d4c52d51 made editing tools not a polymorphic class tree
Teemu Piippo <teemu@hecknology.net>
parents: 189
diff changeset
206 {
197
0e729e681a2c move drawState to Document
Teemu Piippo <teemu@hecknology.net>
parents: 191
diff changeset
207 painter->setBrush(::pens.redPolygonBrush);
191
d355d4c52d51 made editing tools not a polymorphic class tree
Teemu Piippo <teemu@hecknology.net>
parents: 189
diff changeset
208 }
197
0e729e681a2c move drawState to Document
Teemu Piippo <teemu@hecknology.net>
parents: 191
diff changeset
209 canvas->drawWorldPolygon(painter, drawState->previewPolygon);
0e729e681a2c move drawState to Document
Teemu Piippo <teemu@hecknology.net>
parents: 191
diff changeset
210 }
0e729e681a2c move drawState to Document
Teemu Piippo <teemu@hecknology.net>
parents: 191
diff changeset
211 else
0e729e681a2c move drawState to Document
Teemu Piippo <teemu@hecknology.net>
parents: 191
diff changeset
212 {
0e729e681a2c move drawState to Document
Teemu Piippo <teemu@hecknology.net>
parents: 191
diff changeset
213 canvas->drawWorldPolyline(painter, drawState->previewPolygon);
71
198d25fe4e21 show axis directions on the screen
Teemu Piippo <teemu@hecknology.net>
parents: 70
diff changeset
214 }
197
0e729e681a2c move drawState to Document
Teemu Piippo <teemu@hecknology.net>
parents: 191
diff changeset
215 painter->setBrush(::pens.pointBrush);
0e729e681a2c move drawState to Document
Teemu Piippo <teemu@hecknology.net>
parents: 191
diff changeset
216 painter->setPen(::pens.pointPen);
0e729e681a2c move drawState to Document
Teemu Piippo <teemu@hecknology.net>
parents: 191
diff changeset
217 for (const glm::vec3& point : drawState->polygon)
0e729e681a2c move drawState to Document
Teemu Piippo <teemu@hecknology.net>
parents: 191
diff changeset
218 {
0e729e681a2c move drawState to Document
Teemu Piippo <teemu@hecknology.net>
parents: 191
diff changeset
219 canvas->drawWorldPoint(painter, point);
0e729e681a2c move drawState to Document
Teemu Piippo <teemu@hecknology.net>
parents: 191
diff changeset
220 }
0e729e681a2c move drawState to Document
Teemu Piippo <teemu@hecknology.net>
parents: 191
diff changeset
221 canvas->drawWorldPoint(painter, drawState->previewPoint);
71
198d25fe4e21 show axis directions on the screen
Teemu Piippo <teemu@hecknology.net>
parents: 70
diff changeset
222 }
197
0e729e681a2c move drawState to Document
Teemu Piippo <teemu@hecknology.net>
parents: 191
diff changeset
223 break;
71
198d25fe4e21 show axis directions on the screen
Teemu Piippo <teemu@hecknology.net>
parents: 70
diff changeset
224 }
57
5c0005f63319 use glm::unProject to implement screenToModelCoordinates
Teemu Piippo <teemu@hecknology.net>
parents: 56
diff changeset
225 }
64
f99d52b1646b grid snapping now also works with transformed grids
Teemu Piippo <teemu@hecknology.net>
parents: 61
diff changeset
226
129
f35843351601 Add documentation
Teemu Piippo <teemu@hecknology.net>
parents: 128
diff changeset
227 /**
170
9b655f6fe5a1 Added a toggle for setting whether axes are drawn
Teemu Piippo <teemu@hecknology.net>
parents: 169
diff changeset
228 * @brief Renders labels such as +x at the ends of axes at the screen
9b655f6fe5a1 Added a toggle for setting whether axes are drawn
Teemu Piippo <teemu@hecknology.net>
parents: 169
diff changeset
229 * @param painter
9b655f6fe5a1 Added a toggle for setting whether axes are drawn
Teemu Piippo <teemu@hecknology.net>
parents: 169
diff changeset
230 */
9b655f6fe5a1 Added a toggle for setting whether axes are drawn
Teemu Piippo <teemu@hecknology.net>
parents: 169
diff changeset
231 void Canvas::renderAxesLabels(QPainter& painter)
9b655f6fe5a1 Added a toggle for setting whether axes are drawn
Teemu Piippo <teemu@hecknology.net>
parents: 169
diff changeset
232 {
9b655f6fe5a1 Added a toggle for setting whether axes are drawn
Teemu Piippo <teemu@hecknology.net>
parents: 169
diff changeset
233 QFont font;
9b655f6fe5a1 Added a toggle for setting whether axes are drawn
Teemu Piippo <teemu@hecknology.net>
parents: 169
diff changeset
234 //font.setStyle(QFont::StyleItalic);
9b655f6fe5a1 Added a toggle for setting whether axes are drawn
Teemu Piippo <teemu@hecknology.net>
parents: 169
diff changeset
235 painter.setFont(font);
9b655f6fe5a1 Added a toggle for setting whether axes are drawn
Teemu Piippo <teemu@hecknology.net>
parents: 169
diff changeset
236 QFontMetrics fontMetrics{font};
201
5d201ee4a9c3 Continue giant refactor
Teemu Piippo <teemu@hecknology.net>
parents: 200
diff changeset
237 const auto renderText = [&](const QString& text, const PointOnRectagle& intersection)
170
9b655f6fe5a1 Added a toggle for setting whether axes are drawn
Teemu Piippo <teemu@hecknology.net>
parents: 169
diff changeset
238 {
9b655f6fe5a1 Added a toggle for setting whether axes are drawn
Teemu Piippo <teemu@hecknology.net>
parents: 169
diff changeset
239 QPointF position = toQPointF(intersection.position);
201
5d201ee4a9c3 Continue giant refactor
Teemu Piippo <teemu@hecknology.net>
parents: 200
diff changeset
240 const RectangleSide side = intersection.side;
170
9b655f6fe5a1 Added a toggle for setting whether axes are drawn
Teemu Piippo <teemu@hecknology.net>
parents: 169
diff changeset
241 switch (side)
9b655f6fe5a1 Added a toggle for setting whether axes are drawn
Teemu Piippo <teemu@hecknology.net>
parents: 169
diff changeset
242 {
201
5d201ee4a9c3 Continue giant refactor
Teemu Piippo <teemu@hecknology.net>
parents: 200
diff changeset
243 case RectangleSide::Top:
170
9b655f6fe5a1 Added a toggle for setting whether axes are drawn
Teemu Piippo <teemu@hecknology.net>
parents: 169
diff changeset
244 position += QPointF{0, static_cast<qreal>(fontMetrics.ascent())};
9b655f6fe5a1 Added a toggle for setting whether axes are drawn
Teemu Piippo <teemu@hecknology.net>
parents: 169
diff changeset
245 break;
201
5d201ee4a9c3 Continue giant refactor
Teemu Piippo <teemu@hecknology.net>
parents: 200
diff changeset
246 case RectangleSide::Left:
170
9b655f6fe5a1 Added a toggle for setting whether axes are drawn
Teemu Piippo <teemu@hecknology.net>
parents: 169
diff changeset
247 break;
201
5d201ee4a9c3 Continue giant refactor
Teemu Piippo <teemu@hecknology.net>
parents: 200
diff changeset
248 case RectangleSide::Bottom:
170
9b655f6fe5a1 Added a toggle for setting whether axes are drawn
Teemu Piippo <teemu@hecknology.net>
parents: 169
diff changeset
249 position += QPointF{0, static_cast<qreal>(-fontMetrics.descent())};
9b655f6fe5a1 Added a toggle for setting whether axes are drawn
Teemu Piippo <teemu@hecknology.net>
parents: 169
diff changeset
250 break;
201
5d201ee4a9c3 Continue giant refactor
Teemu Piippo <teemu@hecknology.net>
parents: 200
diff changeset
251 case RectangleSide::Right:
170
9b655f6fe5a1 Added a toggle for setting whether axes are drawn
Teemu Piippo <teemu@hecknology.net>
parents: 169
diff changeset
252 position += QPointF{static_cast<qreal>(-fontMetrics.horizontalAdvance(text)), 0};
9b655f6fe5a1 Added a toggle for setting whether axes are drawn
Teemu Piippo <teemu@hecknology.net>
parents: 169
diff changeset
253 break;
9b655f6fe5a1 Added a toggle for setting whether axes are drawn
Teemu Piippo <teemu@hecknology.net>
parents: 169
diff changeset
254 }
9b655f6fe5a1 Added a toggle for setting whether axes are drawn
Teemu Piippo <teemu@hecknology.net>
parents: 169
diff changeset
255 painter.drawText(position, text);
9b655f6fe5a1 Added a toggle for setting whether axes are drawn
Teemu Piippo <teemu@hecknology.net>
parents: 169
diff changeset
256 };
9b655f6fe5a1 Added a toggle for setting whether axes are drawn
Teemu Piippo <teemu@hecknology.net>
parents: 169
diff changeset
257 const QRectF box {QPointF{0, 0}, sizeToSizeF(this->size())};
9b655f6fe5a1 Added a toggle for setting whether axes are drawn
Teemu Piippo <teemu@hecknology.net>
parents: 169
diff changeset
258 const QPointF p1 = this->modelToScreenCoordinates(glm::vec3{0, 0, 0});
9b655f6fe5a1 Added a toggle for setting whether axes are drawn
Teemu Piippo <teemu@hecknology.net>
parents: 169
diff changeset
259 static const struct
9b655f6fe5a1 Added a toggle for setting whether axes are drawn
Teemu Piippo <teemu@hecknology.net>
parents: 169
diff changeset
260 {
9b655f6fe5a1 Added a toggle for setting whether axes are drawn
Teemu Piippo <teemu@hecknology.net>
parents: 169
diff changeset
261 QString text;
9b655f6fe5a1 Added a toggle for setting whether axes are drawn
Teemu Piippo <teemu@hecknology.net>
parents: 169
diff changeset
262 glm::vec3 direction;
9b655f6fe5a1 Added a toggle for setting whether axes are drawn
Teemu Piippo <teemu@hecknology.net>
parents: 169
diff changeset
263 } directions[] =
9b655f6fe5a1 Added a toggle for setting whether axes are drawn
Teemu Piippo <teemu@hecknology.net>
parents: 169
diff changeset
264 {
9b655f6fe5a1 Added a toggle for setting whether axes are drawn
Teemu Piippo <teemu@hecknology.net>
parents: 169
diff changeset
265 {"+𝑥", {1, 0, 0}},
9b655f6fe5a1 Added a toggle for setting whether axes are drawn
Teemu Piippo <teemu@hecknology.net>
parents: 169
diff changeset
266 {"-𝑥", {-1, 0, 0}},
9b655f6fe5a1 Added a toggle for setting whether axes are drawn
Teemu Piippo <teemu@hecknology.net>
parents: 169
diff changeset
267 {"+𝑦", {0, 1, 0}},
9b655f6fe5a1 Added a toggle for setting whether axes are drawn
Teemu Piippo <teemu@hecknology.net>
parents: 169
diff changeset
268 {"-𝑦", {0, -1, 0}},
9b655f6fe5a1 Added a toggle for setting whether axes are drawn
Teemu Piippo <teemu@hecknology.net>
parents: 169
diff changeset
269 {"+𝑧", {0, 0, 1}},
9b655f6fe5a1 Added a toggle for setting whether axes are drawn
Teemu Piippo <teemu@hecknology.net>
parents: 169
diff changeset
270 {"-𝑧", {0, 0, -1}},
9b655f6fe5a1 Added a toggle for setting whether axes are drawn
Teemu Piippo <teemu@hecknology.net>
parents: 169
diff changeset
271 };
9b655f6fe5a1 Added a toggle for setting whether axes are drawn
Teemu Piippo <teemu@hecknology.net>
parents: 169
diff changeset
272 for (const auto& axis : directions)
9b655f6fe5a1 Added a toggle for setting whether axes are drawn
Teemu Piippo <teemu@hecknology.net>
parents: 169
diff changeset
273 {
9b655f6fe5a1 Added a toggle for setting whether axes are drawn
Teemu Piippo <teemu@hecknology.net>
parents: 169
diff changeset
274 const QPointF x_p = this->modelToScreenCoordinates(axis.direction);
201
5d201ee4a9c3 Continue giant refactor
Teemu Piippo <teemu@hecknology.net>
parents: 200
diff changeset
275 const auto intersection = rayRectangleIntersection(
5d201ee4a9c3 Continue giant refactor
Teemu Piippo <teemu@hecknology.net>
parents: 200
diff changeset
276 rayFromPoints(toVec2(p1), toVec2(x_p)),
170
9b655f6fe5a1 Added a toggle for setting whether axes are drawn
Teemu Piippo <teemu@hecknology.net>
parents: 169
diff changeset
277 box);
9b655f6fe5a1 Added a toggle for setting whether axes are drawn
Teemu Piippo <teemu@hecknology.net>
parents: 169
diff changeset
278 if (intersection.has_value())
9b655f6fe5a1 Added a toggle for setting whether axes are drawn
Teemu Piippo <teemu@hecknology.net>
parents: 169
diff changeset
279 {
9b655f6fe5a1 Added a toggle for setting whether axes are drawn
Teemu Piippo <teemu@hecknology.net>
parents: 169
diff changeset
280 renderText(axis.text, *intersection);
9b655f6fe5a1 Added a toggle for setting whether axes are drawn
Teemu Piippo <teemu@hecknology.net>
parents: 169
diff changeset
281 }
9b655f6fe5a1 Added a toggle for setting whether axes are drawn
Teemu Piippo <teemu@hecknology.net>
parents: 169
diff changeset
282 }
9b655f6fe5a1 Added a toggle for setting whether axes are drawn
Teemu Piippo <teemu@hecknology.net>
parents: 169
diff changeset
283 }
9b655f6fe5a1 Added a toggle for setting whether axes are drawn
Teemu Piippo <teemu@hecknology.net>
parents: 169
diff changeset
284
9b655f6fe5a1 Added a toggle for setting whether axes are drawn
Teemu Piippo <teemu@hecknology.net>
parents: 169
diff changeset
285 /**
164
8305e2f968fb Render draw tool preview as a line when we only have 2 points
Teemu Piippo <teemu@hecknology.net>
parents: 157
diff changeset
286 * @brief Draws a polyline to where the specified vector of 3D points would appear on the screen.
8305e2f968fb Render draw tool preview as a line when we only have 2 points
Teemu Piippo <teemu@hecknology.net>
parents: 157
diff changeset
287 * @param painter Painter to use to draw with
8305e2f968fb Render draw tool preview as a line when we only have 2 points
Teemu Piippo <teemu@hecknology.net>
parents: 157
diff changeset
288 * @param points 3D points to render
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289 */
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290 void Canvas::drawWorldPolyline(QPainter *painter, const std::vector<glm::vec3> &points)
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291 {
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292 painter->drawPolyline(QPolygonF{this->convertWorldPointsToScreenPoints(points)});
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293 }
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294
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295 /**
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296 * @brief Draws a polygon to where the specified vector of 3D points would appear on the screen.
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297 * @param painter Painter to use to draw with
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298 * @param points 3D points to render
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299 */
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300 void Canvas::drawWorldPolygon(QPainter* painter, const std::vector<glm::vec3> &points)
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301 {
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302 painter->drawPolygon(QPolygonF{this->convertWorldPointsToScreenPoints(points)});
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303 }
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304
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305 Winding Canvas::worldPolygonWinding(const std::vector<glm::vec3> &points) const
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306 {
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307 return winding(QPolygonF{this->convertWorldPointsToScreenPoints(points)});
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308 }
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309
129
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310 /**
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311 * @brief Gets the current position of the cursor in the model
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312 * @return 3D vector
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313 */
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314 const std::optional<glm::vec3>& Canvas::getWorldPosition() const
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315 {
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316 return this->worldPosition;
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317 }
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318
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319 /**
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320 * @brief Adjusts the grid to be so that it is perpendicular to the camera.
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321 */
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322 void adjustGridToView(Canvas* canvas)
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323 {
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324 const glm::vec3 cameraDirection = canvas->cameraVector();
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325 const glm::mat4& grid = canvas->getGridMatrix();
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326 const glm::vec3 vector_x = glm::normalize(grid * glm::vec4{1, 0, 0, 1});
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327 const glm::vec3 vector_y = glm::normalize(grid * glm::vec4{0, 1, 0, 1});
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328 const float angle_x = std::abs(glm::dot(vector_x, cameraDirection));
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329 const float angle_y = std::abs(glm::dot(vector_y, cameraDirection));
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330 canvas->setGridMatrix(glm::rotate(
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331 grid,
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332 pi<> * 0.5f,
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333 (angle_x < angle_y) ? glm::vec3{1, 0, 0} : glm::vec3{0, 1, 0}
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334 ));
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335 canvas->update();
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336 }
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337
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338 /**
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339 * @returns the ids of the currently selected objects
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340 */
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341 const QSet<ModelId> Canvas::selectedObjects() const
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342 {
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343 return this->selection;
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344 }
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345
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346 const glm::mat4 &Canvas::getGridMatrix() const
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347 {
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348 return this->gridMatrix;
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349 }
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350
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351 /**
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352 * @brief Paints a circle at where @c worldPoint is located on the screen.
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353 * @param painter Painter to use to render
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354 * @param worldPoint Point to render
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355 */
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356 void Canvas::drawWorldPoint(QPainter* painter, const glm::vec3& worldPoint) const
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357 {
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358 const QPointF center = this->modelToScreenCoordinates(worldPoint);
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359 painter->drawEllipse(inscribe(CircleF{center, 5}));
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360 }
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361
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362 /**
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363 * @brief Changes the grid matrix to the one specified. Updates relevant member variables.
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364 * @param newMatrix New matrix to use
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365 */
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366 void Canvas::setGridMatrix(const glm::mat4& newMatrix)
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367 {
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368 this->gridMatrix = newMatrix;
201
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369 const Triangle triangle {
64
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370 this->gridMatrix * glm::vec4{0, 0, 0, 1},
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371 this->gridMatrix * glm::vec4{1, 0, 0, 1},
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372 this->gridMatrix * glm::vec4{0, 1, 0, 1},
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373 };
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374 this->gridPlane = planeFromTriangle(triangle);
64
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375 this->gridProgram->setGridMatrix(this->gridMatrix);
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376 this->update();
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377 }
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378
129
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379 /**
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380 * @brief Gets the current camera vector, i.e. the vector from the camera to the grid origin.
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381 * @return vector
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382 */
67
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383 glm::vec3 Canvas::cameraVector() const
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384 {
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385 // Find out where the grid is projected on the screen
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386 const QPoint gridOrigin2d = pointFToPoint(this->modelToScreenCoordinates(this->gridPlane.anchor));
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387 // Find out which direction the camera is looking at the grid origin in 3d
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388 return glm::normalize(this->cameraLine(gridOrigin2d).direction);
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389 }
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390
66
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391 /**
129
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392 * @brief Calculates whether the screen is perpendicular to the current grid
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393 * @return bool
66
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394 */
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395 bool Canvas::isGridPerpendicularToScreen(float threshold) const
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396 {
67
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397 const glm::vec3 cameraDirection = this->cameraVector();
66
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398 // Compute the dot product. The parameters given are:
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399 // - the normal of the grid plane, which is the vector from the grid origin perpendicular to the grid
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400 // - the direction of the camera looking at the grid, which is the inverse of the vector from the grid
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401 // origin towards the camera
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402 // If the dot product between these two vectors is 0, the grid normal is perpendicular to the camera vector
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403 // and the grid is perpendicular to the screen.
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404 const float dot = glm::dot(glm::normalize(this->gridPlane.normal), glm::normalize(cameraDirection));
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405 return std::abs(dot) < threshold;
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406 }
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407
168
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408 QVector<QPointF> Canvas::convertWorldPointsToScreenPoints(const std::vector<glm::vec3> &worldPoints) const
164
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409 {
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410 QVector<QPointF> points2d;
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411 points2d.reserve(worldPoints.size());
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412 for (const glm::vec3& point : worldPoints)
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413 {
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414 points2d.push_back(this->modelToScreenCoordinates(point));
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415 }
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416 return points2d;
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417 }
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418
165
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419 void Canvas::updateCanvasRenderPreferences()
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420 {
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421 this->isDark = luma(this->renderPreferences.backgroundColor) < 0.25;
165
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422 if (this->gridProgram.has_value())
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423 {
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424 this->gridProgram->setGridColor(this->isDark ? Qt::white : Qt::black);
165
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425 }
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426 }
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427
109
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428 void Canvas::setOverpaintCallback(Canvas::OverpaintCallback fn)
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parents: 108
diff changeset
429 {
40a1cf2f38f5 replaced preview layers in favor of overpainting callback
Teemu Piippo <teemu@hecknology.net>
parents: 108
diff changeset
430 this->overpaintCallback = fn;
40a1cf2f38f5 replaced preview layers in favor of overpainting callback
Teemu Piippo <teemu@hecknology.net>
parents: 108
diff changeset
431 }

mercurial